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v3.19.1

Derivative Instruments - Outstanding Commodity Derivatives (Details) | 3 Months Ended
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Mar. 31, 2019 MMBTU $ / MMBTU
Natural gas (IFERC TRANSCO Z6 non-NY) |
Derivative [Line Items] |
Volume (in Mmbtu) | MMBTU | 8,250,000
Swaps Weighted Average (in usd per Mmbtu) | $ / MMBTU | 0.41
Natural gas (IFERC TRANSCO Z6 non-NY) |
Derivative [Line Items] |
Volume (in Mmbtu) | MMBTU | 32,100,000
Swaps Weighted Average (in usd per Mmbtu) | $ / MMBTU | 2.61
Natural gas (IFERC TRANSCO Leidy Line Receipts) |
Derivative [Line Items] |
Volume (in Mmbtu) | MMBTU | 41,250,000
Swaps Weighted Average (in usd per Mmbtu) | $ / MMBTU | (0.53)
Natural gas (NYMEX) |
Derivative [Line Items] |
Volume (in Mmbtu) | MMBTU | 74,900,000
Swaps Weighted Average (in usd per Mmbtu) | $ / MMBTU | 2.85
Natural gas (NYMEX) |
Derivative [Line Items] |
Volume (in Mmbtu) | MMBTU | 82,500,000
Swaps Weighted Average (in usd per Mmbtu) | $ / MMBTU | 2.81

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Nominal energy measure used to calculate payments on a derivative instrument. + References No definition available. + Details
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- Definition Average fixed price related to the group of price risk swap derivatives. + References No definition available. + Details
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